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연세대학교 의과대학 Yonsei Medical Journal Yonsei Medical Journal 제60권 제11호
발행연도
2019.1
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1,061 - 1,066 (6page)

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Purpose: Newborn screening (NBS) programs are important for appropriate management of susceptible neonates to prevent seriousclinical problems. Neonates admitted to neonatal intensive care units (NICU) are at a potentially high risk of false-positive results,and repetitive NBS after total parenteral nutrition is completely off results in delayed diagnosis. Here, we present the usefulnessof a targeted next-generation sequencing (TNGS) panel to complement NBS for early diagnosis in high-risk neonates. Materials and Methods: The TNGS panel covered 198 genes associated with actionable genetic and metabolic diseases that aretypically included in NBS programs in Korea using tandem mass spectrometry. The panel was applied to 48 infants admitted to theNICU of Severance Children’s Hospital between May 2017 and September 2017. The infants were not selected for suspected metabolicdisorders. Results: A total of 13 variants classified as likely pathogenic or pathogenic were detected in 11 (22.9%) neonates, including sixgenes (DHCR7, PCBD1, GAA, ALDOB, ATP7B, and GBA) associated with metabolic diseases not covered in NBS. One of the 48infants was diagnosed with an isobutyl-CoA dehydrogenase deficiency, and false positive results of tandem mass screening wereconfirmed in two infants using the TNGS panel. Conclusion: The implementation of TNGS in conjunction with conventional NBS can allow for better management of and earlierdiagnosis in susceptible infants, thus preventing the development of critical conditions in these sick infants.

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